Combined type-writing and computing machine.



O. DEGENERI COMBINED TYPE WRITING AND COMPUTING MACHINE. APPLICATION FILED JUNE 24, 193-3- RENEWED FEB. I5, 1918- chines, of which the followin" v :5

QUSTAVE ()3? H1537] 83K, I l". 3., ASSIGNOF. T0 UNDER'WOUD CQMFUTIENB? 1i"; HIE-FE QGIMIALNY, l lh'lW' YORK, N. 1., A COEPORATZGN 0F NEW YORK.

TING ANLU GGMPUTING IJL ECHINE.

Specification. of Letters Patent.

L a c0 iPat-en ted 4L0, 312 MB.

fipplication filed June 2%, 1913, Serial No. 775,479. Renewed February 15, 1918. Serial No. 217,483.

To aZZ whom it may concern:

Be it known that I, GUs'rnvn (l. Dnonnnn, a citizen of the United States, residing in New York city, in the county of New York and State of New Y or i, have invented cer tain new and u. iul ln'iproven'ients in @0111- hined il ypel Vriting and Computing lvlais a specification.

This invention relates to a timing controller for governing the period. of closure of a switch, which controls the activity of a motor in driving the computing mechanism of a combined typewriting and con puting machine of the type shown in m application, No. 753,254, tiled March 1913,.on which this is an improvement,

In the above-mentioned application, at the actuation of a numeral key to a computation, various mechanisms were set in motion under the propulsimi of eicctric motor, so as to complete this compw tation andrun it up in a computing head. The motor was oi the intermittent type, the electric circuit to the motor being completcd at the striking of each numeral key by closing a switch in the form of two contacts movable into engagcn'icnt with each other. When the computation was co1nplcted after the numeral key had returned to normal position, the circuit was broken by a parti of the contacts and the motor stopped until the next numeral kc initiated another computation.

Now, it is possible that the tens-carrying mechanism, which must get in its ii'ork subsequent to the passing from nine to zero in a computing; wheel in the computing;- head, might not be completed by the time the number is run up in its proper dial or convputing wheel. For example, 923,999,999 were exhibited in a computing head and one were added in the units place, it can Very readily be seen that the extent of rotation required to add this one would be very slight, and yet the tcns-carrying mechanism niust subsequently perform its work. not only to carry from the units wheel to .he tons wheel, but also se'r'iati-m from the tens to the hundreds, from the hundreds to the thousands, and so on throughout the whole row of computing wheels. This, then, would take considerable rotation of enscarrying mechanism in excess oi that rclo, I

quircd for the more running up of a number in the particular computing wheel in action. It is therefore necessary in some instances, to keep quent to the bare In the present case 1' have provided a timing controller, which niediately after the hare running 11 p oi the n umber Other features and advantages will hereinafter app-ea In the accompanying draw1ngsspectii'e View showing the improven'ient inconnection with such details of the other mechanism as are thought necessary to illustrate the application the same and show ing the circuit in its open or broken conditionv Fig. the electric switch brought into engagement with each other, so that the circuit to the motor is completed.

Fig. is a detail of the tripping mechanism for the shaft which aids the computation after the initiation of the same hy the striking of a numeral key.

ig. i is a detail section of the retarder o controller.

Referring more oarticularly to the separate parts of i this in ention as emi'iodied the motor running subserunning up of the number.

prevents the break-j mg of the circuit to the electric motor imhis 'ure l is a itraqmentar skeleton new a r. y

2 is a detail showing the contacts of p r in completing:

from engagement with this 7 in the form shown in the drawings, 1 ,in

dicatcs numeral keys, which actuate the usual type actions to W i carried shown).

by the typewriter carriage (not In addition to performing the writing or the numbers. the numeral keys 1 depress lovers 2 to pull on links 3 and thus rock hell cranks J: to draw on links 5, which are connected at their opposite ends to rock lei ere connected to shift interponents 7 into path of an actuator 8, shown in the form ct a frame including two spaced rings on the work-sheet.

1O 11, but power is supplied to the actuator or 9 and 10, in which the particular interponent 7 in action is cradled for a back-andforth movement. The interponents 7 are for the purpose of setting apposite pins 11 in an index or valuating i ur 12, which determines the extent of rot of the shaft of the wheel to correspond 1th the value of the particular numeral key actuated. The interponents 7 are not themselves actually forced by the levers 6 to the pins cradle 8 in one direction from a shaft 13, and in the other direction by a spring 14;. For this purpose, the cradle or actuator is connected to a rod 15, having a spring 14 mounted on one end thereof, and connected to the shaft 13 at the other end by means of a link 16, and a camarm 1'7 fixed on the shaft 13.

The shaft13, receives its motion from a spring 18, which forms a sort of auxiliary motor, and acts'to drive a rack bar 19 having a rack 20 meshing with a gear 21 fixed to the shaft 13. The rack bar 19 performs certain other functions, such as locking a computing head 22 against movement by rocking a lock 23 to bring the toe thereof into engagement with a rack 2 1 carried by the computing head :22. This is accomplished'by a rack 25 on the rack bar 19 engaging a so out 26 carried by the shaft of the lock 23. The shaft 13, however, is normally held against rotation by means of a. detent 27, which engages a five-toothed ratchet wheel 28 secured to the sin ft '13 and held against counter-rotation by a springpressed pawl 29. At each actuation of a numeral key, however, the detent 27 is tripped by means of a tripper 30, which engages an adjustable stop 31 on the detent 27 and is actuated by a lever 32, which in turn is actuated by a disk 33 universal to all of the levers 6.

It will. thus be that when any one of the numeral keys 1 is depressed, it rocks he corresponding lever 6, which in turn slides the universal disk rearwardly against the tension 'of a spring 34:, so that the lever 32 will be rocked to plunge the tripper against the stop 31 on the detent 27, releasing the wheel 28 so that it is permitted to rotate under the propulsion of the spring 18, which has been previously tensioned.

In addition to the functions just mentioned, the shaft 13 unsets the previousl set pin by means of a-cam 35 engaging a resetting finger 36, which is located with its upper end in register with the previously set pin. This set pin leaves a blank or vacant space in the series of pins 11 on the valuating wheel 12, so that a spur wheel locat-ed at this point, which is intended to rot-atethe wheel 12,- will rotate idly if it itself is rotated. The spur wheel is not illustrated here; however, it is mounted on a shaft 3?, which provided with a loose .Jevel gear 38 driven by a bevel. 39.

To connect the bevel gear 38 in driving relation with the shaft 57, there is provided a clutch 4C0, which is rendered eiiective by a shifting arm 11 also actuated on the rotation of the shaft 13 by a spring 12, which is normally held against action because of a linger d3 on the shifting arm 11 engaging the cam 35, which on the rotation of the shaft 13 passes from beneath this finger, permitting the spring 412 to act. The bevel gear 39 is mounted on a shaft ski, which is driven from an electric motor 415 by means f intermeshing bevel gears d6 and 47, the latter of which is on the motor shaft.

When the valuating wheel 12 is rotated by the mutilated gear comprising the pins 11 being completed at the point of mesh. with a driving spur on the shaft 37, then it itself in turn rotates through a mechanism, not shown, a shaft 418, which may rotate either one of a pair of loose bevel gears 41-5) and 50, according to the position of a double clutch 51 splined on the shaft 48 between the gears and 50. These gears 49 and 50 alternatively rotate a bevel gear 52 mounted on a master wheel shaft 53, which is provided with a master wheel located within the computing head 22 and arranged to 1-0-- t te the, omputing wheels thereof individually and scr'iatim, a relative step-by-step movement being provided between the master wheel and the computing wheels in any suitable mannen in addition to driving the 'valuating or index wheel 12, the shaft 14, which driven from the motor -15, drives an intermediate shaft 5 1-, by means of meshing bevel gears and 56, the latter of which is on the shaft iiand the former of which is on the shaft 541-. This shaft in turn drives a shaft 57, through the intermediary of a pair of inter-meshing bevel gears 58 and 59. The shaft 57 in turn. drives the tcns-camying mechanism for the computing head 22 through a similar arrangement. of gears such as that shown in connection with the master-wheel shaft 53.

After a computing action has been com pleted, it is necessary to retension the spring 18 and restore the parts to their normal conditi on ready for 'a subsequent computing operation. For this purpose, a shifter (50 is moved up on the initial movement of the valuating wneel 12 in the manner described in my above mentioned application, so that an arm ('31 thereon comes to a position to be actuated by the just set pin 11 when it comes-to a home position corresponding to the presenting of a blank space to the driving spur wheel, on the shaft 37; In moving to this position, the shifter 60 engages over the hook of a latch 62 on a clutch closer (33.

wires to motor 441 The clutch closer ci 'a ;es of a clutch 64: fixed on 1' e sh ranged to be brought into mesh responding clutch element .lUOn'd shaft 54: but, connected to a sleeve 66.. clutch elements, however, are norr V apart by a spring 67, so that the sleeve 66 is normally silent. When the valuating v-rhcel 12 comes to rest, the just set pin 11 (hereon engages the arm 61 and reel-cs the shi 60, so that the clutch closer is also roc against the tension of the spring 6% the. bringing the clutch elements 6% one gether to drive the sleeve On the sleeve 66, there is provitl i a cam 68,-Wh1ch when the sleeve to 15 rot: eel. will engage a follower 69 on a bell cra ll: ii? to rock the same against the tension or i '71. The bell crank 70 is connec i and-slotconnection 72 to the rack bar 19, so that it will depress the same, retensiou the spring" 18, and restore the shaft 13 aiul the parts connected thereto to their set positions ready for a suhsequr tion; this countenrotation of if l3 b6111 ernntted. in spite of the ivl anti b A. L

the ratchet wheel 28, by a one-way connection 73, which connects the ra chet to the shaft At the e t t action, the latch 62 of the clutch 'losei disengaged from the shifter '30 by a lu plex cam 1'75 on the sleeve 65 engaging latch 62 and tripping it from engagement with the shifter 60, permitting the latter and the clutch closer 63 to return to normal positions, thus interruptirg e clutch connection between. the shaft and the sleeve 66.

NOW, in order to enable the motor to drive all these mechanisms it is first sary to pass an electric current through the same as this motor is normally silent. For this purpose, as soon as the shaft 13 is permitted to rotate under the propulsion of the previously tensiniuecl spring 18, it i switch 74-. which is connecte bv ch;

' To iilo t" cam arm 1? on the shaft 18 engages lower 76, which is mountccl on a. m supported lever 77 and is further conn ed to a link 78, so as to draw on the same. This link in turn swings an arm 79 to rock a shaft 80 carrying an arm 81. The arm 81 underlies a pin 82 on a switch arm 83 which is loosely pivoted 0n the shaft 80. The switch -arm 83 is provided with a bean ing roller 84.- or some insulating iaterial, "Which engages the lower contact 85 the switch 74 and forces it up into engagement with the upper contact 86 of this switch. The contacts 85 and 86 being made of nexible material admit of certain amount of springy or yielding motion when iorcecl into engagement with each other by the switch I The reduced portion seen vL l e lsiuc; the arm Z9, the shaft and the arm :51, so as to witliulra the arni ill from beneath the pin 82 permitting the switch arm to return under i is t n veigit and the slight tension of the conta S5 and 1e return of the i 83 ancl the iy -en'i the switch i i, how Yer, are delayed momentarily bv-a retarcicr or controller shown in the form 01" a (l:

This retarrler comprises an outer r an annular groove 90, in i end of the switch arm 83 ler 89 fits somewhat or piston 9'1 so that moronic etween the piston 92. (l yet will pass slowly 1 achnitting of a slow re iich delays the breaking: the circuit to the znotor 4:5.

The melting of .he circuit, however, on! 55 he quickly accomplished, as the motor n" connectecl up almost instantly with striking o a numeral key. For this purthe evlinrler c il bet-ween pose, the n plunger 91 is reduced at 92 to admit a rather large volume oi air to pass between the piston and the cylinder which r ducecl per ion forms an annular chamber connnunicating at all times. at 93, with the outside atmosphere, the piston 91 always being spaced apart somewhat from the base or support $4 of the plunger 91.

92 forming the eha 1 her between the piston 91 21ml the cylini'ler communicates with a cavity 95. which also communicates with a passage 96. The passage 96 is normally closed by a ball valve 97 which is held on its seat by a spring 98. The spring 98 abuts at its upper enrl against an inwardly-turned annular flange 991 and at its lower end against the ball valve 9''?' When the cylinder 89 is raised relatively to the plunger or piston 91, the ball valve 97 will be sucked up against the tension ot' the spring 98, uncover coinnuiuication is opened between this pasa fliitl. a passage 100. which communicates with the top the internal bore or chamber of the cy url permitting the air to so preventing any all;

llltl ill? tardation of the upward movement oi? the cylinder 89, which movement corresponds to the closing of the circuit to the electric motor 45.

It will thus be seen that whilethe electric circuit to the motor may he quickly made at the striking of numeral hey, the breaking oi this circuit will be delayed after the nuinher corresponding to the numeral key actuated has been run up in the computing head, so that in case an exit a amount of rotation is needed for tens-carrying, the motor so will be running and the tens-carrying mechanism still rotated.

Variations may he resorted to within the scope of the invention,- and portions of the improvements may be used without others.

aving thus described my invention, 1 claim:

1, in a computing machine, the combination with computing mechanism including valuating and carrying mechanisms, of an intermittently operative source of power for operating said valuating and carrying mech anisms, and means ior effecting complete carrying at all times by prolongin the oper ation of said source or power after it has completed the operation of the valuating mechanism.

2. In a computing machine, the combination with computing mechanism, including valuating and carrying mechanisms, of an intermittently-operable motor for driving said carrying and valuating mechanisms, connections from said motor to said mechanisms, and means to control said connections so that the carrying mechanism is driven by said motor for a longer time than the val- "ca-ting mechanism.

3. The combination with a computing mechanism, including carrying mechanism, of means for insuring complete carrying at all times, said means including numeral keys for controlling the action of said computing mechanism, a motor for driving said computing mechanism, a circuit to said motor, a switch for closing said circuit, a switch arm for manipulating the parts of said switch, means for positively actuating said switch arm at theactuation of a numeral key, and a retarder connected to said switch arm for delaying the return movement of tne same after said positive means has been withdrawn from engagement with said switch arm, whereby the operation ofthe motor on the carrying mechanism is pro longed. v x

4. In a computing machine, the combina tion with a computing mechanism, including valuating mechanism and carrying mechanism, of an electric motor including a circuit for driving said valuating' and carrying mechanisms, means for quickly making said air nit to start said motor to actuate said valuating and carrying mechanisms, means to quickly break the connection between said motor and valuating mechanism on oomph, tion of the valuating operation, and means to prolong the circuit closure after the con-- nection from said motor to said valuating mechanism is broken to insure complete oporation of said carrying mechanism.

The combination with a computing nicchanisn'i including a valuating mechanism, of a motor for driving said computing mechanism, a circuit to said motor, a switch for closing said circuit, a. switch arm for manipulating parts of said late the same, a pin on said. arm, a second arm engaging said pin and manipulating said switch arm. numeral keys controlling the movement of said second arm, so as to move said switch arm to close said circuit, means brought into action on the completion of movement or said valuating mechanism for withdrawing said second arm from said pin,

of said switch arm to open said circuit after said second arm has been withdrawn from said pin 7. The combination with computing mechanism, including valuating mechanism, of an interinittently-acting motor for driving said computing mechanism, a circuit to said motor, a pair of contacts for controllin the make and break of said circuit, a root shaft, numeral keys, means for rocking said shaft t the actuation of any of said numeral. keys, an arm fixed to said rock shalt, a switch arm loose on said rock shaft, a pin on said switch arm engageable by said fixed arm to rock said rock shaft, said switch arm engaging one of said contacts to control the make and break of said circuit, means controlled by said valuating mechanism for moving said fixed arm away from said pin, and means for retarding thoreturn movement of said switch arm after said switch arm has moved away from said pin.

8. The combination. with a computing mechanism including valuating mechanism having an action cotirdinato with the com puting of number, of an intermittentlyaoting motor for driving said computing mechanism, numeral'lroys "for controlling the and means for delaying the movement switch, numeral I keys ifor positively actuatlngsaid switch incense action of said computing; mechanism, a normaliy open circuit to said motor, means for closing said circuit at the actuation of said'numeral keys, and means for delaying the opening of said circuit for a period subsequent to the completion of the functions of said val dating mechanism necessary to the computing of a number.

9. The combination with a computing mechanism and numeral keys, of a motor "for driving said computing mechanism amonntsas determined by said keys, ci cuit to said motor including a pair oi contacts, a switch arm engaging one of said contacts to close said circuit, a iever operated by any key for manipulating said si /itch arm, said lever operating said switch arm by direct contact therewith and moving away from said switch. arm. to permit the breaking of said circuit, a drag connected to said switch arm to delay the openingof said circuit for a period subsequent to that determined by said iever, whereby the functions of computing, including carrying of numbers from iower to higher orders,

.znay be fully performed.

10. In a computing machine, the combination with computing mechanism, including valuating mechanism, of an intermit tently-acting motor, a circuit for said motor, computation-determining means for closing the motor circuit to start a computation, connections between the motor and said computing mechanism, disconnecting means in said connections, devices for operating said disconnecting means at the completion of the valuating operation and to restore cer-- tain parts of the computing mechanism to normal position, said devices also acting to initiate the breaking of said motor circuit, and means for retarding the breaking of. said circuit to insure certain parts of said devices being properly positioned for a. sub sequent operation.

GUSTAVE O. DEGENER. Witness J. E. LUCAS, D. L. BATES. 

